Why "Hail to the Chief"? - How it became the presidential song. By Andy Bowers:

"Hail to the Chief we have chosen for the nation,
Hail to the Chief! We salute him, one and all.
Hail to the Chief, as we pledge co-operation
In proud fulfillment of a great, noble call.

"Yours is the aim to make this grand country grander,
This you will do, That's our strong, firm belief.
Hail to the one we selected as commander,
Hail to the President! Hail to the Chief!"